CVE-2025-56795

Comprehensive Technical Analysis of CVE-2025-56795

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-56795 Description: Mealie 3.0.1 and earlier versions are vulnerable to Stored Cross-Site Scripting (XSS) in the recipe creation functionality. Unsanitized user input in the "note" and "text" fields of the "/api/recipes/{recipe_name}" endpoint is rendered in the frontend without proper escaping, leading to persistent XSS. CVSS Score: 9

Severity Evaluation: The CVSS score of 9 indicates a critical vulnerability. Stored XSS vulnerabilities are particularly dangerous because they can affect multiple users who view the malicious content. The impact includes potential data theft, session hijacking, and the execution of arbitrary code within the context of the affected application.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Stored XSS: An attacker can inject malicious scripts into the "note" or "text" fields of a recipe. These scripts are stored on the server and executed whenever the recipe is viewed by any user.
• Phishing: Attackers can use the vulnerability to create convincing phishing pages that steal user credentials or other sensitive information.
• Session Hijacking: By injecting scripts that steal session cookies, attackers can hijack user sessions and gain unauthorized access to user accounts.

Exploitation Methods:

• Script Injection: Attackers can inject JavaScript code into the vulnerable fields. For example, <script>alert('XSS')</script> can be used to test the vulnerability.
• Payload Delivery: More sophisticated payloads can be delivered to perform actions such as keylogging, redirecting users to malicious sites, or exfiltrating data.

3. Affected Systems and Software Versions

Affected Software:

• Mealie versions 3.0.1 and earlier.

Affected Systems:

• Any system running the vulnerable versions of Mealie, including but not limited to:
  • Web servers hosting the Mealie application.
  • User devices accessing the Mealie application through a web browser.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Upgrade to a patched version of Mealie that addresses the vulnerability.
• Input Sanitization: Ensure that all user inputs are properly sanitized and escaped before rendering them on the frontend.
• Content Security Policy (CSP): Implement a strict CSP to mitigate the impact of XSS attacks.

Long-Term Mitigation:

• Regular Security Audits: Conduct regular security audits and code reviews to identify and fix similar vulnerabilities.
• User Education: Educate users about the risks of XSS and how to recognize potential phishing attempts.
• Web Application Firewalls (WAF): Deploy WAFs to detect and block malicious input patterns.

5. Impact on Cybersecurity Landscape

Immediate Impact:

• Data Breaches: Organizations using Mealie may face data breaches if the vulnerability is exploited.
• Reputation Damage: Compromised user accounts and data leaks can lead to significant reputational damage.

Long-Term Impact:

• Increased Awareness: This vulnerability highlights the importance of input validation and proper escaping in web applications.
• Enhanced Security Measures: The incident may prompt developers to adopt more rigorous security practices and tools.

6. Technical Details for Security Professionals

Vulnerability Details:

• Endpoint: /api/recipes/{recipe_name}
• Vulnerable Fields: "note" and "text"
• Exploitation: Unsanitized user input is rendered without proper escaping, leading to persistent XSS.

Detection:

• Static Analysis: Use static analysis tools to identify unsanitized user inputs in the codebase.
• Dynamic Analysis: Perform dynamic analysis and penetration testing to detect XSS vulnerabilities.

Remediation:

• Code Fix: Ensure that all user inputs are properly sanitized and escaped before rendering. Example in JavaScript:

  function sanitizeInput(input) {
      const element = document.createElement('div');
      element.innerText = input;
      return element.innerHTML;
  }
  

• CSP Implementation:

  <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'">
  

Conclusion: CVE-2025-56795 represents a critical vulnerability in Mealie that can lead to severe security implications. Immediate patching and implementation of robust input sanitization and escaping mechanisms are essential to mitigate the risk. Regular security audits and user education can further enhance the overall security posture.

References:

• CVE-2025-56795 Details
• Mealie Issue Tracker
• Mealie Pull Request